Frame for stone flags.



No. 668,757. Patented Feb. 2s, |9ol.

A n. P.scHLl-:GEL.

FRAME Fon sToNE FLAGS. (Application ldMar. 81, 1898.)

(No Model.)

UNITED STATES PATENT OEEICE.

ROBERT P. SCHLEGEL, OF NEWARK, NEW JERSEY.

FRAME FOR STONE FLAGS.

SPECIFICATION forming part of Letters Patent No. 668,757, dated February26, 1901.

Application filed March 31, 1898. Serial No. 675.927. (No model.)

To all whom it may concern:

Be it known that I, ROBERT P. SOHLEGEL, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented a new and useful Frame for Stone Flags, of which the followingis a specification.

This invention relates to frames for artificial blocks; and the objectis to provide a simple and strong frame to receive the composition ofwhich the block is formed, whereby a strong and neat artificial block orag may be produced.

In order to enable others skilled in the art to which my invention mostnearly appertains to make and use the same, I will now proceed todescribe its construction and operation, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure 1 is a perspective View illustrating the metallic frames used inthe manufacture of articial-stone blocks in accordance with myinvention. Fig. 2 is a top plan view of two of said frames adjoiningeach other. Fig. 3 is a vertical sectional view taken on the line 3 3 ofFig. 2. Fig. 4 is a vertical sectional view taken on the broken line 4of Fig. 2, showing also the artificial stone as formed into a block andlaid upon a foundation or bed. Fig. 5 is a detail view illustrating themanner of cutting out the horizontal flange of the angle-iron lframe inorder to form a corner. Fig. 6 is a vertical sectional view on the line6 6 of Fig. 2. Fig. 7 is a similar View on the line 7 7 of Fig.. 2.

Like letters of reference mark the same parts Wherever they occur in thevarious figures of the drawings.

In carrying out my invention I provide a number of metallic frames, eachof which consists of an outer frame A, of angle-iron, here illustratedas rectangular in form. In forming this frame the horizontal ange A ofthe angle-iron is cut away at A", a right-angled V-shaped piece beingcut out, the apex of which is at the bottom of the vertical iange of theangle-iron, so that when the vertical flange at the apex is bent untilthe sides of the space A" come together a right angle will be formed inthe vertical flange, and three of these right angles form three of thecorners of the angle-iron frame, as at B, B', and B".

To form the last angle C of the frame A, one end C of the horizontalfiange A is lapped over the other end C and the two ends securedtogether by a rivet D, as shown in detail in Fig. 6. Within thisangle-iron frame is secured a channel-iron frame E, the channel orgroove being inward and the metal being bent to form an inner square,with its angles at the middle of the sides of the angleiron frame A, thechannel-iron frame being securedto the horizontal flange A of theangle-iron frame by means of rivets F, as shown in detail in Fig. '7.

' In the construction of blocks in accordance with my invention theframes are laid upon a bed G of cinderslor other properly-prepared bedmaterial and a mixture of Portland cement, iron-ore tailings, and wateris spread over the frames to the required thickness. The blocks are thencut apart between the outer edges of the angle-iron frames where theyadjoin each other. The upper surface is theu properly troweled and theblocks marked off with proper tools to any desired form. The mixture isthen allowed to set or harden in position. This method I consider to bepreferable, although the blocks can be made in a factory, singly or innumbers, and laid in position at any time or place and at any season ofthe year without the necessity of blocking off the entrance of houses orstores in frontof which they are laid. They are always ready for use andcan be raised, lowered,or'removed without injury to themselves or damageto any other portion -of the side- Walk, pavement, floor, or otherstructure.

The mixture herein described when seasoned is strong, hard, durable,smooth, and will absorb moisture, thereby avoiding slippery walks due tothe freezing of unabsorbed water lying uponv them. The block thus formedis not susceptible to frost and is not readily broken in raising,lowering, removing, or relaying.

Instead of the mixture herein set forth crushed stone, screenings, orsand may be used with the cement and water.

IOO

Having thus fully described my invention, what I claim as new, unddesire to secure by Letters Patent of the United States, is-

l. In a frame for artificial-stone blocks, the combination with an outerframe, substantially L-sheped in cross-section, of an inner frame, thecorners of which are secured at the intermediate portions of the sidesof the outer frame, said inner frame formed 0f channel-bars and restingat its corners upon one of the flanges of the L-sheped outer frame andabutting the other ilange thereof, substantially as described.

2. In a frame for artificial-stone blocks, the combination with arectangular outer frame having.,r its sides formed substantially L-shaped in cross-section, of an inner bracingframe having its sidesformed U-shaped in cross-section, said inner frame at its cornersresting upon one of the flanges of the sides of the outer frame, andabutting the other ilange thereof, said corners of the inner frame beingsecured to the intermediate portions of the sides of the outer frame,substantially ns described.

ROBERT P. SCHLEGEL.

Witnesses:

JOSEPH F. SCHMlDT, OTTO W. SoHoLZ.

